i dont have the 3rd dash vent, i think the 2 and the rest of the air gaps are sufficient enough IMO. Like he said there is a hole just above each TB i just put tape over it and also put a piece of rubber(not to thick or your box wont slide back on your TBs) under the airbox cause in 300 short kms there was almost a hole chaffed through. So pull your fuel filter and line out of the bracket thats holding it, dont take the bracket off, it just makes re-installing the airbox harder, undo the TB clamps and with a long flat head wiggle the airbox back off the TBs, pull up and out she comes. Youll see how the airbox is just clipped together allowing hot air dust and whatever else to get in and through your motor, seal it all the way around. when re-installing make sure the rubber holder thatholds the back of the airbox is tied up to something so its not suck under the box. hope this makes sence, looks like a pain in the azz to do but its really quit easy